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Precision-Driven Partial Ambiguity Resolution Technique for Short to Medium Baseline Positioning
2021 IEEE Aerospace Conference (50100), 2021GNSS carrier phase observations are fundamental for safety-critical applications where the requirements of accuracy and availability are stringent. Upon the deployment of new GNSS constellation and frequencies, the large number of observations can lead to a decreased probability of successfully mapping the real-valued carrier phase ambiguities to ...
Daniel Medina +4 more
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Single-Frequency GPS/BDS Combined RTK Positioning with Partial Ambiguity Resolution
2019 IEEE 19th International Conference on Communication Technology (ICCT), 2019Aiming at the problem that the ambiguity of carrier-phase is usually more difficult to fix and the positioning result is less effective when using low-cost receiver for real-time kinematic (RTK) positioning, a combined adaptive partial ambiguity resolution (CA-PAR) algorithm is proposed in this paper. The algorithm adaptively adjusts the boundary value
Wentao Fu +4 more
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Partial Preferences and Ambiguity Resolution in Contextual Defeasible Logic
2011Domains, such as Ambient Intelligence and Social Networks, are characterized by some common features including distribution of the available knowledge, entities with different backgrounds, viewpoints and operational environments, and imperfect knowledge.
Antonis Bikakis, Grigoris Antoniou
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On reliable data-driven partial GNSS ambiguity resolution
GPS Solutions, 2014In high-precision global navigation satellite system applications, it is often not possible to simultaneously meet the requirements for fast and reliable integer ambiguity resolution. For a given reliability constraint in form of a user-defined, tolerable probability of an incorrect ambiguity estimate, resolving a subset of ambiguities instead of the ...
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Bootstrapping Added Partial Search Strategy for GNSS Integer Ambiguity Resolution
Advanced Materials Research, 2014Integer least square estimator is known to be optimal in GNSS ambiguity resolution. But it relays on a search in the whole ambiguity space which decreases the computational efficiency. A partial search strategy is proposed in this contribution. The new search is limited in an ambiguity space subset defined by the bootstrapping solution; the search-and ...
Ze Min Wu +3 more
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Research on Fast RTK GNSS Algorithm Based on Partial Ambiguity Resolution
2017The key of GNSS RTK algorithm is the fast and reliable double difference integer ambiguity resolution. Currently widely used algorithm is the LAMBDA method based on the ambiguity search algorithm. But the search efficiency of LAMBDA method is gradually reduced with the increase of the degree of ambiguity.
Nannan Hu +4 more
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Reliable GPS + BDS RTK positioning with partial ambiguity resolution
GPS Solutions, 2016Reliable carrier phase positioning requires the occurrence of incorrect integer ambiguity estimates to be limited to a maximum tolerable rate. In various simulation studies, partial ambiguity resolution (PAR) techniques were shown to be beneficial, since it is more likely that a subset of all ambiguities can be reliably resolved rather than the full ...
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Partial ambiguity resolution for reliable GNSS positioning — A useful tool?
2016 IEEE Aerospace Conference, 2016In differential global navigation satellite system positioning applications with short to moderate observation time spans, carrier phase ambiguity resolution is required to obtain precise coordinate estimates. Depending on the length of the baseline, differential atmospheric delays between the two receivers may have to be considered, thus weakening the
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Ambiguity and conflict in sentencing research: Partial resolution through crime-specific analysis
Journal of Criminal Justice, 1985Prior research on factors influencing sentence severity has produced ambiguous findings. To resolve some of this ambiguity, a crime-specific approach to data analysis is proposed and tested. The research sample consists of 468 convictions resulting from 619 indictments for the crimes of murder, rape, aggravated assault, and robbery.
Belinda Rodgers McCarthy +1 more
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